Source: U.S. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Employment Statistics (Establishment Survey).'
The source code is: CES6000000001
U.S. Bureau of Labor Statistics, All Employees: Professional and Business Services [USPBS], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/USPBS, March 17, 2018.